The location of the serial number label varies depending on the control board. The T-CB serial number is located on the top of the control board (see Figure 1).
Figure 1: T-CB Serial Number Label

The LCC-CB serial number is located on the lower right side of the control board (see Figure 2).
Figure 2: LCC-CB Serial Number Label

The serial number label is located at the top of the left side of the CIP (see Figure 3).
Figure 3: CIP Serial Number Label

The serial number is located on the back of the craft interface panel, behind the alarm LEDs (see Figure 4).
Figure 4: Craft Interface Serial Number Label

The location of the serial number label varies depending on the FPC:
For example, Figure 5 shows the serial number location for a T1600 Type 4 FPC.
Figure 5: Serial Number Label on a T1600 Type 4 FPC

The exact location serial number label is different on different PICs, depending on the placement of components on the PIC board. In this example, the serial number label is located on the right side of the PIC (see Figure 6), when the PIC is vertically oriented (as it would be installed in the router).
Figure 6: PIC Serial Number Label

For the three-input 240-A DC power supply, the serial number label is located on the left side of the power supply faceplate (see Figure 7).
Figure 7: Three-input 240-A Power Supply Serial Number Label

The serial number label is located on the right side of the top of the Routing Engine (see Figure 8).
Figure 8: Routing Engine Serial Number Label

The serial number is located on the top of the SCG, close to the midplane connector (see Figure 9).
Figure 9: SCG Serial Number Label

For the standard SIB or SIB version B, the serial number label is located on the right side of the top of the SIB (see Figure 10).
Figure 10: Standard SIB and SIB Version B Serial Number Label
